Finding the Third Proportional to 428,919.50 and 928,443

Step by Step Solution

1. Step 1: Write the proportion equation
   428,919.50 : 928,443 = 928,443 : x
2. Step 2: Convert to fraction form
   428,919.50/928,443 = 928,443/x
3. Step 3: Cross multiply
   428,919.50x = 928,443 × 928,443
4. Step 4: Simplify right side
   428,919.50x = 862,006,404,249
5. Step 5: Solve for x
   x = 862,006,404,249/428,919.50
6. Step 6: Final answer
   x = 2,009,716.05